diff --git a/src/windows/mod.rs b/src/windows/mod.rs
index e4db343ec204a262f2697f67d3e1b93d98724613..4f4ffe214e2d8cf69975e6562fa5429d8f873dd5 100644
--- a/src/windows/mod.rs
+++ b/src/windows/mod.rs
@@ -188,6 +188,11 @@ pub const SIGABRT: ::c_int = 22;
 pub const NSIG: ::c_int = 23;
 pub const SIG_ERR: ::c_int = -1;
 
+// stdio file descriptor numbers
+pub const STDIN_FILENO: ::c_int = 0;
+pub const STDOUT_FILENO: ::c_int = 1;
+pub const STDERR_FILENO: ::c_int = 2;
+
 // inline comment below appeases style checker
 #[cfg(all(target_env = "msvc", feature = "rustc-dep-of-std"))] // " if "
 #[link(name = "msvcrt", cfg(not(target_feature = "crt-static")))]